Box-motion for looms.



L. H. LANDRY.

BOX MOTION FOR LOOMS.

- APPLICATION FILED AUG. 14. 1909.

Patented May 30, 1916.

3 5HEETS-SHEET 1.

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L. H. LANDRY.

BOX MOTION FOR LOOMS.

APPLICATION FILED AUG. 14, 1909.

Patented May 30, 1916.

3 SHEETSSHEET 2.

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u ELL; l-.. l IILILI IL! L. H. LANDRY.

BOX MOTION FOR LOOMS.

' APPLICATION FILED AUG.14,1909.

Patented May 30, 1916.

3 SHEETS-SHEET 3 A /z y I orbs.

LOUIS H. LANDRY, OF UXBRIDGE, MASSACHUSETTS, ASSIGNOR OF ONE-HALF TOSAMUEL B. TAFT AND ONE-EIGHTH TO UDGIL LACOCQUE, BOTH OF UXBRIDGE,MASSACHUSETTS, AND ONE-EIGHTH TO LOUIS BOUSQUET AND TT-IEODORE BOUS-QUET, BOTH OF BURRILLVILLE, RHODE ISLAND.

BOX-MOTION FOR LOOMS.

Continuation in part of application Serial No. 445,155, filed'July 24,1908.

Specification of Letters Patent.

14, 1909. Serial No. 512,784.

To all whom it may concern.

Be it known that I, LOUIS H. LANDRY, a citizen of the United States,residing at Uxbridge, in the county of WVorcesterand State ofMassachusetts, have invented a new and useful Box-Motion for Looms, ofwhich the following is a specification.

This invention relates to a box motion, and this case is a continuationin part of my United States Patent on a loom, No. 943,028, granted onthe 14th day of December, 1909, on an application filed July 24, 1908,Serial No. 445,155, and is in part an improvement thereon.

The principal objects of this invention are to provide a simple andinexpensive construction of box motion which will open and close thelevers without the use of vibrator gears, and which will operateindependently of the drive of the picker; to provide an improveed andsimplified arrangement of raising and let-down levers, and of operatingconnections therefor, and an improved arrangement of levers to beoperated thereby for controlling the motions of the box; to provide anew and improved dividing lever connection for the long and short leversfor operating the boxes; to provide an improved locking arrangement forthe letdown levers; to provide means whereby the let-down levers can beheld up out of the way when desired; to provide improved means forattaching the box to the box rod connected on the underside so that thebox cannot rock; and to provide a construction of box adapted to operateup and down and take the guide in a vertical path.

Further objects and advantages of the invention will appear hereinafter.

Reference is to be had to the accompanying drawings, in-which Figure 1is an elevation of one form of operating mechanism for the box motion;Fig. 2 is a plan of the same; Fig. 3 is a front elevation showing howthe box may be connected with said box motion; Fig. 4 is an elevation ofanother embodiment of the invention; Fig. 5 is an elevation of a detailthereof; Fig. 6 is a plan of a portion of the driving mechanism shown inFig. 4; Fig. 7 is an end elevation of a part of the box supporting andoperating connections; Fig, .8

is a front view of a portion of a shuttle box showing how it isconnected-with the boxrod; Fig. 9 is an elevation of a portion of theparts shown in Fig. 4 with the outside elements removed to show interiorconstruction, the same being partly in section; Fig.

10 is a similar view of certain parts thereof with further elementsremoved; Fig. 11 is a plan of a detail of the guide shown in Fig. 9.Fig. 12 is a plan of the raising levers; and Fig. 13 is a plan of theoperating chain.

The first four figures represent the matter divided out of my abovementioned application and patent, and the remainder of the figuresrepresent certain improvements thereon which embody and carry out thesame principles.

In the form shown in the first three figures, the box motion is drivenfrom the eccentric shaft 114 through an eccentric 165. The shaft 114 canbe operated by power when the loom is stopped. The eccentric rodconnected with it operates a link 166 which reciprocates a block or frog167 to slide in ways 168 on the frame. The box motion is controlled in away similar to that shown in Figs. 2 and 3 of my above said patent foropening the shed but in this case there are four tilting frames 17 0each having a pair of books 171 constituting raising levers and let-downlevers, above and below the block 167 and sufliciently far apart toprevent both of them engaging the block at the same time. Under theframe 170 or preferably under the lower hook are located a series ofoperating vibrator levers 17 2 which are controlled by a chain cylinder173 on the shaft 107. The rotation of the shaft 107 actuates the levers172 through the chain cylinder 173 in the same manner as that describedabove with reference to the other chain cylinder 150 and causes any oneor more of the frames 170 to be tilted up so that their lower hooksengage the block 167 and move with it. The frames 170 are provided withprojections 174 engaging rollers 175 on a corresponding number of bellcranks 176. These bell cranks operate links 177 two of which aresupported on long pivoted levers 178 and the others on short levers 17 9which operate Swinging sprocket wheels 180, These sprocketwheels engagechains 181 fixed adjustably to the levers 178 and pull the shuttle box182 up a greater or less distance according to which ones of the frames17 are mov- I 183 and spring 184 for guiding and control- 7 ling shuttleboxes in the box guides 185. A lock 186 on the shaft 187 acts to holdthe -levers 172 like the lock 158, of my above mentioned patent.

-Referring now to Figs. 4 to 13' inclusive, this form of the inventionwill be described in greater detail. The main shaft (not shown) drivesthe chain cylinder shaft 20 on which is a gear 21 represented by. dottedlines running a gear on a shaft which by bevel gears rotates an uprightshaft 23.

V The shaft 23 is shown as drivinga. shaft 24 by means of bevel gears,and connectedwith the latter shaft are eccentric gears 25 and 26 whichrotate a horizontal shaft 27 carrying an eccentric 28. The object of theeccentric gear is to provide a construction in which thespeed of theshaft 27 can be made to vary during a complete rotation so as toraisethe boxes slowly and drop them rapidly.

On the eccentric 28 ismounted an eccentric strap 29 connected with a camlever 30 which operates a swinging lever 31 pivoted to the frame of theloom. This lever is shown as pivotally connected with a sliding block orfrog 32, which is provided with a longitudinal slot 33 therein throughwhich projects a guide 34 which is mounted on the frame and has a plate35 on the outer end to keep the frog in position on the guide. This frogis shown as having two projections 36 on opposite sides.

- The chain cylinder 40 which is mounted on the shaft 20 is providedwith the usual operating' chain 41 as is well understood in this art.This chain is designed to lift in turn. a plurality of vibrators orlevers 42 pivoted on a rod 43. In the present case four of these leversare shown, each one having a spring 44 for normally pulling it down onthe chain of the cylinder. Each lever has a projection 45 adapted toengage in a way on the bottom of a raising lever 46 so that when thechain raises one of the vibrators, the corresponding raising lever willbe raised. Each of these raising levers is shown as provided I with aslot 47 passing over a shaft 48 on the frame so as to permit'the raisinglever to move back and forth. Each of the raising I levers has a camsurface 49 on its upper side 'along which'slides a projection 50 on aletdown lever 51.' The surface 49 gradually :rises toward the right sothat as the let down lever is pulled back it gradually rises and finallybecomes disengaged from the projection 36. The raising levers andletdown levers are provided with projections or teeth 52 and 53respectively, which are engaged by the projections of the frog as thelatter reciprocates. When any one of the vibrators is permitted to restback on the chain cylinder on account of the absence of any roll of thechain at that point, the corresponding raising lever drops down out ofthe way of the lower projection 36 and at the same time thecorresponding let-down lever drops down into position for its tooth toengage the upper projection 36. Normally spring levers 54 press down onthe let-down levers to hold them in position to engage the frog, but ifdesired they can be locked up out of the way by means of a projection 55on each one and a gravity lock latch 56 for engaging these projections.These projections extend out so as to be easily moved by the finger.This lock is used when it is desired to hold these levers up out of theway for repairs or any other purpose.

Certain of the raising levers 46 extend back of the shaft 48 and arepivoted to short levers 60. The others extend farther back and arepivoted to long levers 61. Both the short and long levers are mounted toswing freely on a shaft or stud 62 fixed to the frame. Also mounted toswing freely on this shaft or stud is a connecting lever 63 whichextends below the shaft 62 and has a curved portion extending above it.To the upper end of this curved portion is pivoted a dividing lever 64.This dividing lever extends in both directions from its pivot andengages a stud 65 on the short lever and a stud 66 on the correspondinglong lever. 105 The distances from the center of the dividing lever tothese points of contact with the is as follows: When the frog moves tothe 7 right, the lower projection 36 thereon will engage one or more ofthe teeth 52 on account of those levers being raised by the chain.Consequently, the motion of the frog will pull one or more of the levers46 to the right. The motion of the lower end of the dividing lever 64will be reduced to a half at its point of application to the connectinglever 63. If the raisinglever that is operated is one of those which isconnected to one of the long levers 61 the motion of the connectinglever will be twice as great as is the case when a short lever isoperated. This is on account of the fact that the distance between theshaft 62 and the stud'66 is twice as great as that between the shaft 62and the stud 65. It will be understood that in either case one of thestuds 65 or 66 remains stationary and serves as a fulcrum for the'lever64. The parts are so designed that this operation of the short levermoves the box up one step, while the same operation of the long levermoves it up two steps. If it is desired to raise it up three steps, itis necessary to operate both the short and long lever and this will havethat efiect because in that case both the studs are advanced. The longand short levers are returned to a normal position or moved backwardlyto some other position by means of the let-down levers which as has beenexplained, are operated when the frog moves to the right. This operationtakes place in a very simple manner through levers 68 pivoted on theshaft 48 and eachconnected with one of the let-down levers 51. Each ofthese levers 68 is connected by a link as 69 with either a short or along lever. Each lever 68 also has a notch 70 adapted to be engaged by atooth on a lock finger 71 which is normally pressed upwardly intolocking position by a spring 72. The vibrators 42 are provided withprojecting fingers 7 3 which engage over the ends of the lock fingersand unlock the same when the vibrators are pulled down by their springs44 which are stronger than the springs 72. Each lever 68 has a tooth 740to limit the backward motion of rotation.

When it is desired to keep the boxes at their highest limit on bothsides of the loom so that the shuttle will play back and forth in asingle box, which of course is done for weaving selvages or certainsimple fabrics, the fOllOWing mechanism is provided: The severalvibrators are provided with operating surfaces 74 which are adapted tobe engaged by a projection on the shaft 75 that is operated by a handle76. This is located adjacent to the comb 77 in the present instance.Another comb 78 is shown at the point where the projections 73 engagethe lock fingers.

It will be understood of course that any desired numbers of boxes can beused on each side of the loom but in the present instance the machine isillustrated as having four boxes on each side; consequently there arefour vibrators 42; four raising levers; four let-down levers; and fourlock fingers all located on the head motion side of the loom, but thereis only one connecting lever 63. This connecting lever directly operatesthe box on that side of the loom as will be described hereinafter, whilethe box on the other side is operated by a. link 780 that extends acrossthe loo-m and a bell-crank or other lever 79 for transmitting its motionto a rod 80. The corresponding rod 80 on the head motion side of theloom is operated from the connecting lever 63 in any con venient manneras for example, by a lever and arm or bell-crank, as indicated. The rods80 of the two sides of the loom preferably are connected with theShuttle. boxes in the same way and only one of them will be described.

At its lower end the rod 80 is provided with a loop 81 receiving a lever82 which is connected by a link 83 with the bottom of the box rod 84,which is adapted to move in a guide 85 on the frame. The box rod isprovided with a spring 86 as usual and at its upper end it is shown ashaving a thin projecting flange 87 provided with a fiat top surface, astud 88, and a projection 89 having a fiat surface at the top thereof.The shuttle box 90 rests fiat on the top surface of the flange 87, andis provided with an ear 91 registering with the projection 87 andConnected with the lever 82 is a chain 93 which passes under a roller 94and is connected with a spring 95 to steady the boxes. The springs fromthe opposite sides of the loom may be connected together if desired orcan be independent of each other. The operation of these elements willbe obvious. The rod 80 pulls the lever 82 up to lift the boxes, whilethe spring pulls it down when permitted by the mechanism abovedescribed.

While I have illustrated and described two embodiments of thisinvention, I am aware that many modifications can be made therein by anyperson skilled in the art without departing from the scope of theinvention as expressed in the claims. Therefore, I do not wish to belimited to all the details of construction shown and described, but

What I do claim is 1. In a loom, the combination of two shafts,eccentric gears connecting said shafts for driving one of them at anon-uniform rate of speed during a revolution, an eccentric lever or armconnected with said shaft and adapted to be operated thereby, a block orfrog connected with said lever, a guide for guiding said block or frogto move in a straight path, and levers on two sides of the block. orfrog adapted to be engaged thereby, whereby the said levers will bemoved with the block or frog.

2. In a box motion for looms, the combination of a block, means formoving the block, a lever adapted to engage the block, an operatinglever, means for lifting the operating lever so as to lift the firstnamed lever, means for locking said operating lever in its liftedposition to hold the first named lever, means for moving thefirst namedlever back after the operation of the operating lever and block, andmeans controlled by said block for moving the boxes.

3. In a loom, the combination of a block,

1 means for moving the block, a plurality of the block, a series ofoperating levers, one for levers having projections adapted to engageeach first-namedlever, a chain cylinder for lifting the operating leversin a predetermined order so as to periodically lift the first-namedlevers, means controlled by each of the first-named levers for operatingthe box motion, means for locking said operating levers periodically intheir lifted position to hold the first-named levers, and means formoving the parts back to position 7 after the first-named levers haveoperated.

4. In a loom, the combination of a recip- V rocatory block, a guide forgrinding said block to move in a straight path, a series of levershaving teeth thereon, whereby the motion of the block in one directionwill 'move said levers if they are in engagement with it, means formoving them into engagement with the block, means for controlling saidmoving means to bring them into action in predeterminedorder, and aseries of levers for moving the parts back to position after the firstnamed levers have operated.

. 5. Ina loom, the combination of a reciprocatory block, a guide forguiding said block to move in a straight path, a series of levers belowthe block having teeth thereon, whereby the motion of the block in onedirection will move said levers if they are in engagement with it, meansbelow said levers for raising them into engagement with the block,"means for controlling said raising means to' bring them into action inpredetermined order, and a series of leversabove the block for engagingit and moving the parts back .to position after the lower levers haveoperated.

6. In a loom, the combination ofa sliding block, a set of lower levers,a series of. vibra tors for raising the lower levers into position to beengaged and moved by the block,

means for controlling the operation of the vibrators, a set of upperlevers adapted to engage the block on its reverse travel, and springlevers engaging the upper levers and normally forcing them toward theblock.

7. In a loom, the combination of a sliding block, a series of leversadapted to engage said block and to be moved therewith, spring leversfor normally pressing the first named levers toward the block, each ofsaid spring levers having a projection thereon by which the said springlevers can be swung out of contact with the first named levers. andmeans for locking said spring levers'in retracted position.

8. In a loom, the combination of a sliding block, a series of leversbelow the blocks having teeth for engaging the block, means forselecting certain of said levers and raising them into contact with theblock, and a series of upper levers adapted to engage the block on thereverse motion, each resting on one of the lower levers and movableupwardly independently thereof.

9. In a loom, the combination of a sliding block, a' series of leversbelow the block adapted to be raised individually into contacttherewith, each of said levers having a cam track thereon in the sidetoward the block, a series of levers above the block,

each resting on one of said cam tracks and adapted to engage the blockwhen at the outer end of the cam track and to be raised from the blockas they move with it over the cam track.

10. In a loom, the combination of a sliding block, a series of leversadapted to be moved individually into contact therewith, each of saidlevers having a cam track thereon in the side toward the block, a seriesof levers, each engaging one of said cam tracks and adapted to engagethe block when at the outer end of the cam track and to be moved awayfrom the block as they move with it along the cam track.

11. In a loom, the combination of a movable block, a series of levershaving means for engaging the block whereby said levers will be movedwith the block, a series of cam tracks for said levers, each risingtoward the block, whereby the levers will be raised out of engagementwith the block after having traveled a certain distance therewith, astationary shaft, a series of levers pivoted 100 on said shaft, oneconnected with each of the first named levers and adapted to be operatedthereby, means for engaging the last named levers and locking the partsin position, and a shuttle box mechanism connected 05 with the lastnamed levers.

12. In a loom, the combination of a movable block, a series of levershaving means for engaging the block, whereby said levers will be movedwith the block, a stationary 11o shaft, a series of levers pivoted onsaid shaft, one connected with each of the first named levers andadapted to be operated thereby, a shuttle box mechanism connected withthe last named levers, each of the last named le- 115 vers having anotch therein, and a series of spring-pressed levers adapted to engagein said notches for looking the parts in position.

13. In a loom,.the combination of a movable block, a series of levershaving means for engaging the block, whereby said levers will be movedwith the block, a stationary shaft, a series of levers pivoted on saidshaft, one connected with each of the first named levers and adapted tobe operated thereby, a 126 shuttle box mechanism connected with the lastnamed levers, each of said last named levers having a notch therein, aseries of spring-pressed lock fingers adapted to engage in said notchesfor locking the parts in position, a series of vibrators for operatingthe first named levers, each having a projection adapted to engage alock-finger, and resilient means for normally pulling said vibrators andthus removing the locking finger from operative position.

14:. In a loom, the combination of a movable block, a series of levershaving means for engaging the block whereby said levers will be movedwith theblock, a second series of levers, one connected with each of thefirst named levers and adapted to be operated thereby, a shuttle boxmechanism connected with the last named levers, each of the last namedlevers having a notch therein,

and a series of spring-pressed lock-fingers adapted to engage in saidnotches for locking the parts in position, said levers each having astop beyond the notch whereby when the lock-finger is released from thenotch it will still engage said stop and limit the motion of the otherlever.

In testimony whereof I have hereunto set my hand, in the presence of twosubscribing witnesses.

LOUIS H. LANDRY.

Witnesses:

A. E. FAY, C. FORREST Wnsson.

@opies of this patent may be obtained for five cents each, by addressingthe Commissioner of Panama, Washington, D. C.

